Possibility of the measurement of radiated waves derived from the thermally emittedelectron Bernstein wave(EBW)is numerically investigated based on the assumption of the superdense core(SDC)plasma generated in LHD.EBW that is thermally emitted in the electroncyclotron resonance(ECR)layer may couple with the electromagnetic wave and be emitted to thevacuum via the EBW-extraordinary-ordinary(B-X-O)mode conversion process.We consider theuse of one of the transmission lines for electron cyclotron heating(ECH)in LHD as a receivingsystem of the emission.It is derived that the waves in the fundamental cyclotron frequency rangeare emitted as the EBW near their upper hybrid resonance(UHR)layer outside the last close fluxsurface(LCFS).On the other hand,waves in the second harmonics cyclotron frequency range areemitted in the core region.It means that successful measurement of waves of the second harmonicfrequency range emitted from extremely high dense core plasma with setting an aim angle forreceiving indicates a possibility of the second harmonic ECH by EBW in the core region withsetting the same aim angle and the same polarization for launching.
展开▼
